NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Mendoza's method for clearing lunars.
From: Henry Halboth
Date: 2004 Aug 2, 23:25 -0400
From: Henry Halboth
Date: 2004 Aug 2, 23:25 -0400
George: You seem to have received more than enough help - Herberts attachment of Table XXXV, at least as I received it, is quite readable, so I will assume that you are by now happlily calculating away. On Mon, 2 Aug 2004 23:04:47 +0100 George Huxtablewrites: > Thanks to Henry Halboth and to Bruce Stark for helpful replies. > > I don't blame Henry (or University libraries either) for being > reluctant to > subject their precious rare volumes to being opened flat on the bed > of a > scanner. Indeed, it's about time a scanner was developed which could > be > insrted into the cleavage between two pages, scanning right into the > corner, so that the spine doesn't need to be opened more than 90 > degrees. > > So instead I will ask Henry to extract some relevant values from > table > XXXV, as he Kindly offered, to provide values for the 3rd and 4th > corrections.. > > 20 July 1816, App.dist. 57deg 54' 41", Moon's corr. 41' 36", 1st > corr. 22' 21" > > 31 July 1820, App. dist 93deg 40' 26", Moon's corr 50' 39", 1st corr > 49' 10" > > 24 July 1821, App.dist. 58deg 11' 56", Moon's corr 48' 22", 1st corr > 27' 51" > > 1 Aug 1823, App dist. 69deg 57' 54", Moon's corr 50' 45", 1st corr > 23' 24" > > 2 Aug 1823, App. dist. 55deg 15'39", Moon's corr. 52'51", 1st corr > 29'45" > > Have I provided enough information there, to enable him to find the > third > and fourth corrections? > > But if any member happens to have access to that 1839 (or earlier) > Norie's > with a table XXXV of 3 pages extending to 120 deg, and an easy-going > librarian who will allow copying, then I would be most grateful for > a copy > of that table. > > George. > > ================================================================ > contact George Huxtable by email at george@huxtable.u-net.com, by > phone at > 01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 > Sandy > Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. > ================================================================ >